Why does this happen?

Maybe you have some blank lines at the end of the file. Add a check like this

while (my $line1 = <$file2>){
  next unless ($line1 =~ /\S/); # skip empty lines
  chomp $line1;

[download]
poj

In reply to Re^3: Combining Files using Hash by poj
in thread Combining Files using Hash by chaney123

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